Red Sox second baseman Dustin Pedroia left Saturday’s game in the second inning with a head injury. He suffered the injury attempting to apply a tag to Logan Forsythe, who was advancing from first base to second base on Ryan Hanigan’s deep fly ball to center field, which allowed James Loney to score.

Forsythe slid head-first and lifted up his right arm to avoid Pedroia’s glove. In rotating his arm around, he appeared to elbow Pedroia in the temple on the left side of his head — it did not appear to be intentional. Pedroia was down for a while before leaving the field with the help of manager John Farrell and a team trainer. Brock Holt moved from third base to second base, and Will Middlebrooks entered the game to man the hot corner. Pedroia grounded out to shortstop in his only at-bat on the evening.

The severity of the injury is not yet known as the Red Sox have not provided updates at the moment.

The Cardinals have officially signed outfielder Dexter Fowler to a five-year, $82.5 million contract. Fowler will also get a full no-trade clause.

The Cardinals gave Fowler a bigger deal than many speculated he’d get, as some reports predicted he’d get something in the $52-72 million range. His skills, however — he’s a fantastic leadoff hitter who plays a premium defensive position — definitely earned him some major dough. Fowler hit .276/.393/.447 with 13 homers, 48 RBI and 13 steals over 125 games in 2016 for the World Series champion Cubs.

For the Cardinals, this will allow Matt Carpenter to move down to the middle of the batting order and will shift Randal Grichuk to left field. It also takes a prime piece from the Cardinals’ biggest rival. For their part, earlier this offseason the Cubs signed former Cardinal center fielder Jon Jay. So that’s fun.

The Cardinals have always emphasized building from within. In the 2016-17 offseason, however, they may end up being one of the bigger free agent buyers. At least according to some informed speculation.

The Cardinals are already losing their first round pick due to the Fowler signing, so any other top free agent won’t cost them more than the money he’s owed. And as far as money goes, the Cardinals have a great deal of it, despite being a small market team. They have a billion dollar TV deal coming online and Matt Holliday and Jaime Garcia are off the payroll now. Spending big on a free agent or three would not cripple them or anything.

Encarnacion or Trumbo would be first baseman, which wold fly in the face of the Cards’ move of Matt Carpenter to first base (and, at least as far as Encarnacion goes, would fly in the face of good defense). Getting either of them would push Carpenter back to second, displacing Kolten Wong, or over to third, displacing Jhonny Peralta. If you’re going to do that, I’d say that Turner would make more sense, but what do I know?

Either way, the Cardinals may be entering a pretty interesting phase of their offseason now. And an unfamiliar one as, quite possibly, the top free agent buyer on the market.